linux-kernel - Re: [PATCH v9 0/6] scripts/make_fit: Support ramdisks and faster operations

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Message-ID: <CAFLszTg3aDQoSj5YcszYQGWP85V85jvcL4uw611m66Ek8L9Eow@mail.gmail.com>
Date: Wed, 4 Feb 2026 10:59:11 +1300
From: Simon Glass <sjg@...omium.org>
To: Nathan Chancellor <nathan@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org, 
	Thomas Weißschuh <thomas.weissschuh@...utronix.de>, 
	J . Neuschäfer <j.ne@...teo.net>, 
	Masahiro Yamada <masahiroy@...nel.org>, Ahmad Fatoum <a.fatoum@...gutronix.de>, 
	Nicolas Schier <nicolas@...sle.eu>, Tom Rini <trini@...sulko.com>, 
	Chen-Yu Tsai <wenst@...omium.org>, Alice Ryhl <aliceryhl@...gle.com>, 
	Ard Biesheuvel <ardb@...nel.org>, David Sterba <dsterba@...e.com>, Josh Poimboeuf <jpoimboe@...nel.org>, 
	Kees Cook <kees@...nel.org>, Nick Terrell <terrelln@...com>, Nicolas Schier <nsc@...nel.org>, 
	Petr Mladek <pmladek@...e.com>, linux-kbuild@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 0/6] scripts/make_fit: Support ramdisks and faster operations

hI Nathan,

On Tue, 3 Feb 2026 at 17:51, Nathan Chancellor <nathan@...nel.org> wrote:
>
> Hi Simon,
>
> On Tue, Feb 03, 2026 at 03:45:36PM +1300, Simon Glass wrote:
> > On Wed, 7 Jan 2026 at 05:27, Simon Glass <sjg@...omium.org> wrote:
> > >
> > > This series updates 'make image.fit' to support adding a ramdisk to the
> > > FIT, provided as a parameter.
> > >
> > > It also includes a few performance improvement, so that building a FIT
> > > from ~450MB of kernel/module/devicetree files only takes a few seconds
> > > on a modern machine.
> > >
> > > For this version I have dropped inclusion of built modules, as there is
> > > still more discussion to happen in that area.
> > >
> > > Changes in v9:
> > > - Rename the variable to FIT_EXTRA_ARGS
> > >
> > > Changes in v8:
> > > - Drop erroneous line 'kbuild: Allow adding modules into the FIT ...'
> > >
> > > Changes in v7:
> > > - Add a note about the " -> ' change
> > > - Add a new patch with the MAKE_FIT_FLAGS change
> > > - Mention xz as well, in the commit message
> > > - Drop patch 'scripts/make_fit: Provide a way to add built modules'
> > > - Drop patch 'kbuild: Split out module targets into a variable'
> > > - Drop patch 'kbuild: Allow adding modules into the FIT ramdisk'
> > >
> > > Changes in v6:
> > > - Drop the load address for ramdisk, as it is not needed
> > > - Bring back the ramdisk 'compression' property, set to 'none'
> > >
> > > Changes in v5:
> > > - Fix 'use' typo
> > >
> > > Changes in v4:
> > > - Update the commit message
> > >
> > > Changes in v3:
> > > - Move the ramdisk chunk into the correct patch
> > > - Add a comment at the top of the file about the -r option
> > > - Count the ramdisk in the total files
> > > - Update the commit message
> > >
> > > Changes in v2:
> > > - Don't compress the ramdisk as it is already compressed
> > >
> > > Simon Glass (6):
> > >   scripts/make_fit: Speed up operation
> > >   scripts/make_fit: Support an initial ramdisk
> > >   scripts/make_fit: Move dtb processing into a function
> > >   kbuild: Support a FIT_EXTRA_ARGS environment variable
> > >   scripts/make_fit: Support a few more parallel compressors
> > >   scripts/make_fit: Compress dtbs in parallel
> > >
> > >  scripts/Makefile.lib |   2 +-
> > >  scripts/make_fit.py  | 179 ++++++++++++++++++++++++++++++++++---------
> > >  2 files changed, 145 insertions(+), 36 deletions(-)
> >
> > Can this series be applied, please?
>
> Who are you expecting to apply this series? It does not look like it has
> gone through one tree consistently and it is not clear from the
> addressees. I guess it could go through Kbuild?

Yes, that's what I was thinking.

Regards,
Simon